Upper and lower die positioning structure and deep drawing stamping die

Abstract

The utility model provides an upper and lower die positioning structure and a deep drawing stamping die, which are applied to the positioning of an upper die and a lower die in the deep drawing stamping die, the upper die in the deep drawing stamping die comprises an upper die holder, a convex die is fixedly arranged on the upper die holder, the lower die comprises a working table, a lower die holder is arranged on the working table, and the convex die is fixedly arranged on the working table. A female die is fixedly arranged on the lower die holder; the upper and lower die positioning structure comprises a positioning pin, an upper positioning plate, a lower positioning plate and an adjusting mechanism, one end of the positioning pin is used for being connected with a male die, a positioning pin hole matched with the positioning pin is formed in the upper positioning plate, the lower positioning plate is connected with the upper positioning plate through a connecting column, and a fixing structure is arranged on the lower positioning plate. The lower positioning plate can be fixed to the female die through the fixing structure, and the adjusting mechanism is arranged on the working table face of the lower die and can adjust the lower die base to move forwards, backwards, leftwards and rightwards along the working table face. The problem that an upper die and a lower die of a deep drawing stamping die in the prior art are inaccurate in positioning is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, in particular to an upper and lower die positioning structure and a deep drawing stamping die, which are applied to positioning the upper die and the lower die in the deep drawing stamping die. Background Art

[0002] With the increasing market demand for electronic products and new energy power batteries, deep-drawing die technology and development have rapidly advanced in recent years. Demand for dies for both round and square housings, whether steel or aluminum, has surged. However, due to the niche nature of deep-drawing die technology within the stamping die industry, traditional die development and production has tended to be more of a "workshop-style" process, making it difficult to guarantee precision and quality. While Japanese high-precision die technology has been introduced to the Chinese market in recent years, and technologies like precision CNC machining are gaining popularity, 3D die design has not yet become widespread. Consequently, inherent design flaws require post-processing by fitters, but many technical issues are beyond the capabilities of fitters. Currently, multi-station deep-drawing dies utilize a two-dimensional high-speed transmission system to improve stamping production efficiency. If the traditional precision assembly method of guide pins and guide sleeves were continued for this deep-drawing application, the die size would increase significantly at each station, compromising the high-speed operation and precision of the transmission mechanism, while also significantly increasing die cost. Therefore, guide pin and guide sleeve guide structures are not suitable for deep-drawing stamping dies.

[0003] Therefore, since the upper and lower molds of the current mold have no guides, the assembly method mostly uses manual vision for rough alignment. The lower mold is loosened on the installation table, and the workpiece of the previous process is used for trial stretching and guiding. Then the lower mold screws are tightened, and the surface quality of the stretched part and the thickness at different positions are judged to determine whether the upper and lower mold gaps are evenly adjusted. This indirect method of judging the mold gap error can sometimes reach about 0.2mm. Although the staged acceptance of part quality is acceptable, uncontrollable factors (such as: fluctuations in material thickness, the influence of lubrication, mold maintenance and polishing, etc.) may cause abnormal deviations in part quality, resulting in a large number of parts being scrapped. Therefore, it is necessary to find a scientific and reasonable mold structure mode to achieve precise assembly of the mold, so that the mold gap assembly data is consistent with the theoretical data, in order to improve the processing quality of the product. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an upper and lower die positioning structure and a deep drawing stamping die, which are used to solve the problem of inaccurate positioning of the upper and lower dies of the deep drawing stamping die in the prior art.

[0005] To achieve the above-mentioned purpose and other related purposes, one aspect of the present invention provides an upper and lower die positioning structure, which is used for positioning the upper die and lower die in a deep drawing stamping die, wherein the upper die includes an upper die seat, a punch is fixedly provided on the upper die seat, and the lower die includes a work table, a lower die seat is provided on the work table, and a die is fixedly provided on the lower die seat, and the upper and lower die positioning structure includes a positioning pin, one end of which is used to connect with the punch; an upper positioning plate, the upper positioning plate is provided with a positioning pin hole adapted to the positioning pin; a lower positioning plate, the lower positioning plate is connected to the upper positioning plate through a connecting column, the lower positioning plate is provided with a fixing structure, and the lower positioning plate can be fixed to the die through the fixing structure; an adjustment mechanism, the adjustment structure is arranged on the work table, and the adjustment mechanism can adjust the lower die seat to move back and forth and left and right along the work table.

[0006] Preferably, the die is fixed to the lower die base by bolts and pins, and the fixing structure includes a fixing hole provided on the lower positioning plate, and the position of the fixing hole on the lower positioning plate corresponds to the position of the pin on the die.

[0007] Preferably, there are two positioning pins and two positioning pin holes.

[0008] Preferably, there are two connecting columns, which are respectively arranged at the left and right ends of the lower positioning plate.

[0009] Preferably, a connecting hole is provided on the upper positioning plate, the upper end of the connecting column is loosely fitted in the connecting hole, the lower end of the connecting column is fixedly connected to the lower positioning plate, and a spring is sleeved on the connecting column, one end of the spring contacts the upper positioning plate, and the other end of the spring contacts the lower positioning plate.

[0010] Preferably, the adjusting mechanism includes a first fixed block, a second fixed block, a third fixed block and a fourth fixed block fixedly arranged on the work table, the first fixed block, the second fixed block, the third fixed block and the fourth fixed block are respectively located at the front, rear, left and right sides of the lower mold base, the first fixed block is threadedly connected to a first screw, one end of the first screw abuts against the front side wall of the lower mold base, the second fixed block is threadedly connected to a second screw, one end of the second screw abuts against the rear side wall of the lower mold base, the third fixed block is threadedly connected to a third screw, one end of the third screw abuts against the left side wall of the lower mold base, the fourth fixed block is threadedly connected to a fourth screw, one end of the fourth screw abuts against the right side wall of the lower mold base.

[0011] As described above, the upper and lower mold positioning structure of the utility model has the following beneficial effects: when in use, one end of the positioning pin is connected to the punch in the upper mold, and the lower positioning plate is fixed to the die in the lower mold through a fixing structure, and then the upper mold is controlled to move downward so that the positioning pin on the punch matches the positioning pin hole on the upper positioning plate. If there is a deviation between the positioning pin on the punch and the positioning pin hole on the upper positioning plate, they cannot be aligned and inserted. At this time, it means that the positioning between the upper mold and the lower mold, that is, the punch and the die, is inaccurate. Therefore, the lower mold base can be adjusted to move back and forth and left and right through the adjustment mechanism so that the positioning pin hole on the upper positioning plate is aligned with the positioning pin on the punch, so that the positioning pin can be inserted into the positioning pin hole, thereby achieving precise positioning between the lower mold and the upper mold, that is, the die and the punch. Then the lower mold base is locked and fixed on the workbench, and the positioning pin is removed from the punch, and the lower positioning plate and the upper positioning plate are removed from the die, thereby completing the positioning of the upper mold and the lower mold in the deep drawing stamping mold. Therefore, compared with the existing technology, the upper and lower die positioning structure of the utility model can achieve precise positioning of the upper die and the lower die in the deep drawing stamping die, thereby improving the quality of the deep drawing stamping die processing products, and has a simple structure and convenient operation.

[0012] Another aspect of the present invention further provides a deep drawing stamping die, which includes the upper and lower die positioning structures described above.

[0013] The beneficial effects of the deep drawing stamping die are the same as those of the upper and lower die positioning structures described above, so they will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Shown is a schematic diagram of the upper and lower die positioning structure provided by the present invention when used on a deep drawing stamping die.

[0015] Figure 2 Display provided by the utility model Figure 1 Stereoscopic image.

[0016] Description of reference numerals:

[0017] 100 upper mold

[0018] 101 Upper die seat

[0019] 102 Punch

[0020] 103 Die handle

[0021] 104 Press upper slide

[0022] 200 lower die

[0023] 201 work surface

[0024] 202 lower die base

[0025] 203 die

[0026] 301 positioning pin

[0027] 302 upper positioning plate

[0028] 3021 connection hole

[0029] 303 lower positioning plate

[0030] 3031 connecting column

[0031] 304 spring

[0032] 3051 Third fixed block

[0033] 3052 Fourth fixed block

[0034] 3053 third screw

[0035] 3054 Fourth Screw DETAILED DESCRIPTION

[0036] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention.

[0037] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections, direct connections, connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0038] In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. used in the present invention to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0039] See also Figures 1 to 2 It should be noted that the illustrations provided in this embodiment are merely schematic illustrations of the basic concept of the present invention. Therefore, the illustrations only show components relevant to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the type, quantity, and proportion of each component may be arbitrarily changed, and the component layout may also be more complex.

[0040] The first aspect of the present invention provides an upper and lower die positioning structure, which is applied to the positioning of the upper die and the lower die in a deep drawing stamping die, such as Figure 1 As shown, in the deep drawing stamping die, the upper die 100 includes an upper die base 101, on which a punch 102 is fixed, and the lower die 200 includes a work table 201, on which a lower die base 202 is provided, and on which a die 203 is fixed; specifically, the upper and lower die positioning structures include a positioning pin 301, an upper positioning plate 302, a lower positioning plate 303 and an adjustment mechanism, wherein one end of the positioning pin 301 is used to connect with the punch 102, the upper positioning plate 302 is provided with a positioning pin hole adapted to the positioning pin 301, the lower positioning plate 303 is connected to the upper positioning plate 302 through a connecting column 3031, and a fixing structure is provided on the lower positioning plate 303, and the lower positioning plate 303 can be fixed to the die 203 through the fixing structure, and the adjustment mechanism is provided on the work table 201 of the lower die, and the adjustment mechanism can adjust the lower die base to move forward, backward, left and right along the work table.

[0041] The beneficial effect of the upper and lower mold positioning structure of the utility model is that when in use, Figure 1As shown, one end of the locating pin 301 is connected to the punch 102 in the upper mold, and the lower locating plate 303 is fixed to the die 203 in the lower mold through a fixing structure. Then the upper mold is controlled to move downward so that the locating pin 301 on the punch 102 is matched with the locating pin hole on the upper locating plate 302 fixed on the die 203. If there is a deviation between the locating pin 301 on the punch 102 and the locating pin hole on the upper locating plate 302, and they cannot be aligned and inserted, it means that the upper mold and the lower mold, that is, the punch and the die, are not positioned accurately. Therefore, The adjustment mechanism adjusts the lower die base 202 to move forward, backward, left and right, so that the positioning pin hole on the upper positioning plate 302 is aligned with the positioning pin 301 on the punch 102, so that the positioning pin 301 can be inserted into the positioning pin hole, thereby achieving precise positioning between the lower die and the upper die, that is, the die and the punch, and then the lower die base 202 is locked and fixed on the work table 201 so that it can no longer move, and then the positioning pin is removed from the punch, and the lower positioning plate and the upper positioning plate are removed from the die, thereby completing the positioning of the upper die and the lower die in the deep drawing stamping die. Therefore, compared with the prior art, the upper and lower die positioning structure of the utility model can achieve precise positioning of the upper die and the lower die in the deep drawing stamping die, thereby improving the quality of the deep drawing stamping die processing products, and has a simple structure and convenient operation.

[0042] Specifically, such as Figure 1 As shown, in this embodiment, the upper die 100 further includes an upper press slide 104, the upper die base 101 being fixed to the upper press slide 104 via bolts, and the punch 102 being fixed to the upper die base 101 via a die handle 103. Specifically, the punch 102 and die handle 103 are fixedly connected via a keyway and bolts. Specifically, in this embodiment, the lower die base 202 is fixed to the work surface 201 via screws. To adjust the movement of the lower die base 202, the screws securing the lower die base are simply loosened. Once the upper and lower dies are positioned, the screws are tightened to secure the lower die base to the work surface.

[0043] Specifically, such as Figure 2 As shown, in this embodiment, the die 203 is fixed to the lower die base 202 by bolts and pins. Therefore, as a preference, in this embodiment, the fixing structure provided on the lower positioning plate 303 includes a fixing hole (not shown) provided on the lower positioning plate 303, and the position of the fixing hole on the lower positioning plate 303 corresponds to the position of the pin on the die 203. Through this structural design, when the lower positioning plate 303 is fixed to the die 203, the fixing hole on the lower positioning plate 303 can directly cooperate with the pin on the die 203, that is, the lower positioning plate 303 is positioned using the same pins as the die 203 and the lower die base 202, thereby ensuring the consistency of the positioning of the lower positioning plate 303 (and the upper positioning plate) with the die.

[0044] Furthermore, in order to improve the positioning accuracy of the lower die, as Figure 1 As shown, in this embodiment, there are two positioning pins 301, and correspondingly, two positioning pin holes are provided on the upper positioning plate 302. In positioning, as the upper mold 100 moves downward, the two positioning pins 301 installed on the punch 102 are respectively inserted into the two positioning pin holes on the upper positioning plate 302. Since setting one positioning pin can only limit the freedom of movement of the lower mold in the horizontal direction, in this embodiment, by setting two positioning pins, the rotational freedom of the lower mold can also be limited, thereby improving the positioning accuracy of the lower mold. The effect is preferably, as Figure 1 As shown, during positioning, the two positioning pins can be arranged with one long and one short. In this way, when the upper mold descends, the positioning pins on the punch engage with the positioning pin holes on the upper positioning plate. The longer positioning pin is first inserted into the positioning pin holes on the lower positioning plate 302 to achieve positioning of the lower mold in the X and Y directions, that is, horizontal directions. Then, as the lower mold continues to descend, the shorter positioning pin gradually inserts into the other positioning pin hole on the lower positioning plate, thereby limiting the rotational freedom of the lower mold. Thus, the precise positioning of the lower mold is achieved through the cooperation of the long and short positioning pins.

[0045] Specifically, in this embodiment, the positioning pin can be connected to the male mold by plugging and unplugging, so that it is easy to disassemble. The diameter of the positioning pin 301 can be The locating pin and the locating pin hole adopt a clearance fit, and the fit clearance is 0.02mm.

[0046] Furthermore, in order to improve the strength of the connection structure between the upper positioning plate 302 and the lower positioning plate 303, as shown in FIG. Figure 1 As shown, in this embodiment, two connecting columns 3031 are provided between the upper positioning plate 302 and the lower positioning plate 303 , and the two connecting columns 3031 are respectively provided at the left and right ends of the lower positioning plate 303 .

[0047] Furthermore, considering that the positioning pin 301 on the punch 102 may deviate from the positioning pin hole on the upper positioning plate 302 during positioning, the positioning pin may collide with the upper positioning plate 302 during insertion, which may damage the upper positioning plate or the positioning pin. Figure 1 and Figure 2As shown, in this embodiment, a connecting hole 3021 is provided on the upper positioning plate 302. The upper end of the connecting column 3031 is loosely fitted with the connecting hole 3021 on the upper positioning plate 302. The lower end of the connecting column 3031 is fixedly connected to the lower positioning plate 303. A spring 304 is sleeved on the connecting column 3031. One end of the spring 304 contacts the upper positioning plate 302, and the other end of the spring 304 contacts the lower positioning plate 303. Due to this structural design, when there is a deviation between the positioning pin 301 and the positioning pin hole, causing the positioning pin 301 to collide with the upper positioning plate 302, the spring 304 provided below the upper positioning plate 302 provides elastic support. Therefore, when the positioning pin 301 collides with the upper positioning plate, the upper positioning plate will compress downward to buffer the collision force, thereby avoiding a rigid collision and preventing the positioning pin and the upper positioning plate from being damaged.

[0048] Further, such as Figure 1 As shown, in this embodiment, the adjustment mechanism includes a first fixed block (not shown in the figure), a second fixed block (not shown in the figure), a third fixed block 3051 and a fourth fixed block 3052 fixedly arranged on the work table 201, and the first fixed block, the second fixed block, the third fixed block 3051 and the fourth fixed block 3052 are respectively located on the front, back, left and right sides of the lower mold base 202, a first screw is threadedly connected to the first fixed block, one end of the first screw abuts against the front side wall of the lower mold base 202, a second screw is threadedly connected to the second fixed block, one end of the second screw abuts against the rear side wall of the lower mold base 202, a third screw 3053 is threadedly connected to the third fixed block 3051, one end of the third screw 3053 abuts against the left side wall of the lower mold base 202, and a fourth screw 3054 is threadedly connected to the fourth fixed block 3052, one end of the fourth screw 3054 abuts against the right side wall of the lower mold base 202.

[0049] The second aspect of the present invention further provides a deep drawing stamping die, which includes the upper and lower die positioning structure described above. The beneficial effects of the deep drawing stamping die are the same as those of the upper and lower die positioning structure described above, so they will not be described in detail here.

[0050] In summary, the present invention provides a top and bottom die positioning structure and a deep-draw stamping die that can precisely position the upper and lower dies in a deep-draw stamping die, thereby improving the quality of products processed using the deep-draw stamping die. Furthermore, the positioning structure is simple, easy to install, and readily disassemble. Therefore, after installation in one process, it can be installed in a subsequent process for assembly and positioning. Therefore, the present invention effectively overcomes the various shortcomings of the prior art and possesses high industrial value.

[0051] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by persons skilled in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A top and bottom die positioning structure, used for positioning the top and bottom dies in a deep drawing stamping die, wherein: The upper die includes an upper die base, a male die is fixedly provided on the upper die base, and the lower die includes a work surface, a lower die base is provided on the work surface, and a female die is fixedly provided on the lower die base. The upper and lower die positioning structures include: A positioning pin, one end of which is used to connect with the punch; An upper positioning plate, wherein the upper positioning plate is provided with a positioning pin hole adapted to the positioning pin; A lower positioning plate, the lower positioning plate being connected to the upper positioning plate via a connecting column, the lower positioning plate being provided with a fixing structure, and the lower positioning plate being able to be fixed to the die via the fixing structure; An adjusting mechanism is provided on the work surface, and the adjusting mechanism can adjust the lower die base to move forward, backward, left and right along the work surface.

2. The upper and lower mold positioning structure according to claim 1, characterized in that: The die is fixed to the lower die base by bolts and pins. The fixing structure includes a fixing hole provided on the lower positioning plate, and the position of the fixing hole on the lower positioning plate corresponds to the position of the pin on the die.

3. The upper and lower mold positioning structure according to claim 1, characterized in that: There are two positioning pins and two positioning pin holes.

4. The upper and lower mold positioning structure according to claim 1, characterized in that: There are two connecting columns, which are respectively arranged at the left and right ends of the lower positioning plate.

5. The upper and lower mold positioning structure according to any one of claims 1 to 4, characterized in that: A connecting hole is provided on the upper positioning plate, the upper end of the connecting column is loosely matched with the connecting hole, the lower end of the connecting column is fixedly connected to the lower positioning plate, and a spring is sleeved on the connecting column, one end of the spring contacts the upper positioning plate, and the other end of the spring contacts the lower positioning plate.

6. The upper and lower mold positioning structure according to claim 1, characterized in that: The adjusting mechanism includes a first fixed block, a second fixed block, a third fixed block and a fourth fixed block fixed on the work table, the first fixed block, the second fixed block, the third fixed block and the fourth fixed block are respectively located at the front, back, left and right sides of the lower mold base, the first fixed block is threadedly connected to a first screw, one end of the first screw abuts against the front side wall of the lower mold base, the second fixed block is threadedly connected to a second screw, one end of the second screw abuts against the rear side wall of the lower mold base, the third fixed block is threadedly connected to a third screw, one end of the third screw abuts against the left side wall of the lower mold base, the fourth fixed block is threadedly connected to a fourth screw, one end of the fourth screw abuts against the right side wall of the lower mold base.

7. A deep drawing stamping die, characterized in that: It comprises the upper and lower mold positioning structure as described in any one of claims 1 to 6.

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